S
M
T
W
T
F
S
26
66°
37°
27
68°
41°
28
63°
46°
29
63°
46°
30
72°
46°
1
72°
46°
2
72°
50°
3
66°
54°
4
61°
50°
5
63°
50°
6
57°
46°
7
57°
45°
8
64°
43°
9
68°
45°
10
55°
41°
11
54°
36°
12
63°
34°
13
55°
45°
14
54°
37°
15
57°
37°
16
59°
41°
17
61°
46°
18
57°
46°
19
63°
52°
20
64°
52°
21
70°
52°
22
79°
52°
23
84°
61°
24
86°
57°
25
87°
61°
26
82°
59°
27
77°
58°
28
74°
55°
29
68°
56°
30
71°
58°
31
70°
59°
1
68°
57°
2
66°
52°
3
64°
52°
4
63°
51°
5
62°
52°
6
63°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Seaford
Seaford's May 2026 forecast shows daily high temperatures ranging from 62° to 87°, with overnight lows between 51° and 61°. The average high for May is 70° with an average low of 55°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Seaford. See also: June | July | August.